Modeling and simulation of nine-level cascaded H-bridge inverter based shunt active power filter for single-phase distribution system

Abstract

In this paper, a solitary phase Nine-Level cascaded H-Bridge (CHB) based Shunt Active Power Filter (SHAPF) in view of basic controller is proposed. Synchronous Reference Frame theory (SRF) is utilized for reference source current extraction and to create gating pulses for the SHAPF. The principle point of the cascaded bridge is to dispense harmonics, enhance power factor and reactive power compensation of the single-phase distribution framework. The suggested control calculation has two parts, changing the load current into stationary reference outline directions and estimation of peak amplitude of load currents. Consequently, a basic and dependable controller effortlessly of execution was created. The calculation for single-phase shunt active filter is intending to perform with exact tracking performance under step changes in load currents and to give great dynamic compensation. In this paper, synchronous reference theory PLL with Inverse-Park change is adopted for producing quadrature part of current. The execution of the control calculation is tried and assessed utilizing MATLAB/Simulink tool.